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frosja888 [35]
3 years ago
12

What are the excluded values of x for

title=" \frac{x+1}{x^2-1} " alt=" \frac{x+1}{x^2-1} " align="absmiddle" class="latex-formula">
A. x = –1, x = 0, x = 1
B. x = –1, x = 0
C. x = 0, x = 1
D. x = –1, x = 1
Mathematics
2 answers:
NISA [10]3 years ago
8 0
Denominator:

x^2-1=(x+1)(x-1)=\big(x-(-1)\big)(x-1)

so excluded values are x =  -1 and x = 1.

Answer D.
Nataly_w [17]3 years ago
5 0

The answer would be D. x=-1, x=1


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How many distinct permutations of the letters of the word BANANA
krok68 [10]

Answer:

Their would be 6

1-b, 3-a's, 2-n's

Hope this helps have a great day

7 0
3 years ago
Out of 100 employees at a company, 92 employees either work part time or work 5 days each week. There are 14 employees who work
Alexus [3.1K]

Answer: 0.02

Step-by-step explanation:

OpenStudy (judygreeneyes):

Hi - If you are working on this kind of problem, you probably know the formula for the probability of a union of two events. Let's call working part time Event A, and let's call working 5 days a week Event B. Let's look at the information we are given. We are told that 14 people work part time, so that is P(A) = 14/100 - 0.14 . We are told that 80 employees work 5 days a week, so P(B) = 80/100 = .80 . We are given the union (there are 92 employees who work either one or the other), which is the union, P(A U B) = 92/100 = .92 .. The question is asking for the probability of someone working both part time and fll time, which is the intersection of events A and B, or P(A and B). If you recall the formula for the probability of the union, it is

P(A U B) = P(A) +P(B) - P(A and B).

The problem has given us each of these pieces except the intersection, so we can solve for it,

If you plug in P(A U B) = 0.92 and P(A) = 0.14, and P(B) = 0.80, you can solve for P(A and B), which will give you the answer.

I hope this helps you.

Credit: https://questioncove.com/updates/5734d282e4b06d54e1496ac8

7 0
3 years ago
URGENT PLEASE HELP 15 POINTS
Dimas [21]

Answer:

25/40=13/20

Step-by-step explanation:

just add 9 and 17 which is 26. so it's 26/40. simplify so it's 13/20

5 0
3 years ago
Read 2 more answers
Help me please help ASAP please I will mark brainliest if I can
Over [174]

Answer:

60-9pi if you need that rounded then 31.73

Step-by-step explanation:

10*6= 60

the two semi circles make one full circle. a circle formula is pi*r^2 = pi*3^2= 9pi

then subtract 9pi from 60

60-9pi = 31.73

8 0
3 years ago
Read 2 more answers
Aleena expands 2xx+3-5(x-2) as 2x2+3-5x-10. Has she expanded it correctly? Please identify the mistakes and write the correct wa
Nimfa-mama [501]

The given expression is :

2xx+3-5(x-2)

We know that, x{\cdot}x=x^2

=2x^2+3-5(x-2)\\\\=2x^2+3+(-5)(x)+(-5)(-2)\\\\=2x^2+3-5x+10

Aleena expands 2xx+3-5(x-2) as 2x²+3-5x-10. She is mistaken because the sign before 10 should be +10 instead of -10. Hence, the correct expanded form is 2x²+3-5x+10. Hence, this is the required solution.

5 0
3 years ago
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